/* 
   TOKENS & RESET
    */
:root {
  --bg: #f7f5f0;
  --bg-subtle: #eeebe4;
  --bg-card: #ffffff;
  --border: #e2ddd6;
  --text: #1a1714;
  --text-muted: #6b6560;
  --text-light: #9c968f;
  --accent: #c8622a;
  --accent-dim: rgba(200, 98, 42, 0.12);
  --nav-bg: rgba(247, 245, 240, 0.88);

  --font-sans: "Inter", system-ui, sans-serif;
  --font-mono: "DM Mono", "Courier New", monospace;

  --radius: 8px;
  --radius-lg: 14px;
  --transition: 0.22s ease;
  --max-w: 1080px;
  --nav-h: 64px;
}

[data-theme="dark"] {
  --bg: #111110;
  --bg-subtle: #1a1917;
  --bg-card: #1e1c1a;
  --border: #2e2b28;
  --text: #f0ece5;
  --text-muted: #8a8480;
  --text-light: #5c5854;
  --accent: #e07a42;
  --accent-dim: rgba(224, 122, 66, 0.12);
  --nav-bg: rgba(17, 17, 16, 0.88);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* 
   NAV
    */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.nav.scrolled {
  border-color: var(--border);
  box-shadow: 0 1px 24px rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text);
  transition: color var(--transition);
}

.nav-alias {
  color: var(--accent);
  margin-left: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition);
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--text);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition:
    color var(--transition),
    border-color var(--transition),
    background var(--transition);
}

.theme-toggle:hover {
  color: var(--text);
  background: var(--bg-subtle);
}

.icon-sun,
.icon-moon {
  transition: opacity 0.2s ease;
}

[data-theme="light"] .icon-moon {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: none;
}

/* 
   SECTIONS SHARED
    */
.section {
  padding: 100px 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.section-heading {
  font-family: var(--font-sans);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 56px;
}

.section-heading em {
  font-style: normal;
  color: var(--text-muted);
}

/* 
   HERO
    */
.hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 100px;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.hero-inner {
  position: relative;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}

.hero-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2.2s ease infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(0.75);
  }
}

.hero-name {
  font-family: var(--font-sans);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 28px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.02em;
}

.hero-dot {
  color: var(--border);
}

.hero-years {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.hero-summary {
  max-width: 560px;
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}

.hero-domains span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-muted);
  transition:
    border-color var(--transition),
    color var(--transition);
}

.hero-domains span:hover {
  border-color: var(--accent);
  color: var(--text);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 11px 24px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--accent) 85%, #000);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text-muted);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  color: var(--text);
  background: var(--bg-subtle);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-light);
}

.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--text-light);
  transform-origin: left;
  animation: line-grow 2s ease infinite;
}

@keyframes line-grow {
  0%,
  100% {
    transform: scaleX(1);
    opacity: 0.4;
  }

  50% {
    transform: scaleX(0.5);
    opacity: 1;
  }
}

/* 
   ABOUT
    */
.about {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 80px;
  align-items: start;
}

.about-text p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-aside {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 8px;
}

.about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-family: var(--font-sans);
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light);
}

/* 
   EXPERIENCE
    */
.exp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.exp-card {
  background: var(--bg-card);
  padding: 36px;
  transition: background var(--transition);
  position: relative;
}

.exp-card:hover {
  background: color-mix(in srgb, var(--bg-card) 96%, var(--accent));
}

.exp-card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.exp-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.exp-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  margin-top: 4px;
  opacity: 0.8;
  flex-shrink: 0;
}

.exp-card-header h3 {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
}

.exp-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 20px;
}

.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.exp-tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  padding: 4px 10px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 4px;
}

/* 
   SKILLS
    */
.skills {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 60px;
}

.skill-group-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.skill-items span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg-card);
  transition:
    color var(--transition),
    border-color var(--transition);
}

.skill-items span:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

/* 
   CONTACT
    */
.contact {
  overflow: hidden;
}

.contact-inner {
  max-width: 680px;
}

.contact-sub {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 48px;
  margin-top: -24px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  transition: background var(--transition);
}

.contact-item:first-child {
  border-top: none;
}

.contact-item:hover {
  background: var(--bg-subtle);
}

.contact-item:hover svg {
  transform: translate(2px, -2px);
}

.contact-item-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light);
  width: 60px;
  flex-shrink: 0;
}

.contact-item-value {
  font-size: 0.9375rem;
  color: var(--text);
  flex: 1;
}

.contact-item svg {
  color: var(--text-light);
  flex-shrink: 0;
  transition:
    transform var(--transition),
    color var(--transition);
}

.contact-item:hover svg {
  color: var(--accent);
}

/* 
   FOOTER
    */
.footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-alias {
  color: var(--text-light);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-light);
}

/* 
   ANIMATIONS — FADE IN ON SCROLL
    */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 {
  transition-delay: 0.08s;
}

.fade-in-delay-2 {
  transition-delay: 0.16s;
}

.fade-in-delay-3 {
  transition-delay: 0.24s;
}

.fade-in-delay-4 {
  transition-delay: 0.32s;
}

.fade-in-delay-5 {
  transition-delay: 0.4s;
}

/* 
   RESPONSIVE
    */
@media (max-width: 860px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: 72px 0;
  }

  .nav-links {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-aside {
    flex-direction: row;
    gap: 40px;
    flex-wrap: wrap;
  }

  .exp-grid {
    grid-template-columns: 1fr;
  }

  .exp-card:last-child:nth-child(odd) {
    grid-column: auto;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 32px;
  }

  .hero-scroll-hint {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: fit-content;
  }
}